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<h2><span class="refentrytitle"><a name="gstreamer-GstMiniObject.top_of_page"></a>GstMiniObject</span></h2>
<p>GstMiniObject — Lightweight base class for the GStreamer object hierarchy</p>
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<div class="refsect1">
<a name="gstreamer-GstMiniObject.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectCopyFunction" title="GstMiniObjectCopyFunction ()">*GstMiniObjectCopyFunction</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectDisposeFunction" title="GstMiniObjectDisposeFunction ()">*GstMiniObjectDisposeFunction</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectFreeFunction" title="GstMiniObjectFreeFunction ()">*GstMiniObjectFreeFunction</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectNotify" title="GstMiniObjectNotify ()">*GstMiniObjectNotify</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-TYPE:CAPS" title="GST_MINI_OBJECT_TYPE()">GST_MINI_OBJECT_TYPE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-FLAGS:CAPS" title="GST_MINI_OBJECT_FLAGS()">GST_MINI_OBJECT_FLAGS</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-FLAG-IS-SET:CAPS" title="GST_MINI_OBJECT_FLAG_IS_SET()">GST_MINI_OBJECT_FLAG_IS_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-FLAG-SET:CAPS" title="GST_MINI_OBJECT_FLAG_SET()">GST_MINI_OBJECT_FLAG_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-FLAG-UNSET:CAPS" title="GST_MINI_OBJECT_FLAG_UNSET()">GST_MINI_OBJECT_FLAG_UNSET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-IS-LOCKABLE:CAPS" title="GST_MINI_OBJECT_IS_LOCKABLE()">GST_MINI_OBJECT_IS_LOCKABLE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-REFCOUNT:CAPS" title="GST_MINI_OBJECT_REFCOUNT()">GST_MINI_OBJECT_REFCOUNT</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-MINI-OBJECT-REFCOUNT-VALUE:CAPS" title="GST_MINI_OBJECT_REFCOUNT_VALUE()">GST_MINI_OBJECT_REFCOUNT_VALUE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#GST-DEFINE-MINI-OBJECT-TYPE:CAPS" title="GST_DEFINE_MINI_OBJECT_TYPE()">GST_DEFINE_MINI_OBJECT_TYPE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-init" title="gst_mini_object_init ()">gst_mini_object_init</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-ref" title="gst_mini_object_ref ()">gst_mini_object_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unref" title="gst_mini_object_unref ()">gst_mini_object_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-clear-mini-object" title="gst_clear_mini_object ()">gst_clear_mini_object</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-weak-ref" title="gst_mini_object_weak_ref ()">gst_mini_object_weak_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-weak-unref" title="gst_mini_object_weak_unref ()">gst_mini_object_weak_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-lock" title="gst_mini_object_lock ()">gst_mini_object_lock</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unlock" title="gst_mini_object_unlock ()">gst_mini_object_unlock</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-is-writable" title="gst_mini_object_is_writable ()">gst_mini_object_is_writable</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-make-writable" title="gst_mini_object_make_writable ()">gst_mini_object_make_writable</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-add-parent" title="gst_mini_object_add_parent ()">gst_mini_object_add_parent</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-remove-parent" title="gst_mini_object_remove_parent ()">gst_mini_object_remove_parent</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-copy" title="gst_mini_object_copy ()">gst_mini_object_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-set-qdata" title="gst_mini_object_set_qdata ()">gst_mini_object_set_qdata</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-get-qdata" title="gst_mini_object_get_qdata ()">gst_mini_object_get_qdata</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-steal-qdata" title="gst_mini_object_steal_qdata ()">gst_mini_object_steal_qdata</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-replace" title="gst_mini_object_replace ()">gst_mini_object_replace</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-take" title="gst_mini_object_take ()">gst_mini_object_take</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-steal" title="gst_mini_object_steal ()">gst_mini_object_steal</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-GstMiniObject.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject">GstMiniObject</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectFlags" title="enum GstMiniObjectFlags">GstMiniObjectFlags</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gstreamer-GstMiniObject.html#GstLockFlags" title="enum GstLockFlags">GstLockFlags</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="gstreamer-GstMiniObject.html#GST-LOCK-FLAG-READWRITE:CAPS" title="GST_LOCK_FLAG_READWRITE">GST_LOCK_FLAG_READWRITE</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-GstMiniObject.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-GstMiniObject.description"></a><h2>Description</h2>
<p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> is a simple structure that can be used to implement refcounted
types.</p>
<p>Subclasses will include <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> as the first member in their structure
and then call <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-init" title="gst_mini_object_init ()"><code class="function">gst_mini_object_init()</code></a> to initialize the <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> fields.</p>
<p>gst_mini_object_ref() and <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unref" title="gst_mini_object_unref ()"><code class="function">gst_mini_object_unref()</code></a> increment and decrement the
refcount respectively. When the refcount of a mini-object reaches 0, the
dispose function is called first and when this returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, the free
function of the miniobject is called.</p>
<p>A copy can be made with <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-copy" title="gst_mini_object_copy ()"><code class="function">gst_mini_object_copy()</code></a>.</p>
<p>gst_mini_object_is_writable() will return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> when the refcount of the
object is exactly 1 and there is no parent or a single parent exists and is
writable itself, meaning the current caller has the only reference to the
object. <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-make-writable" title="gst_mini_object_make_writable ()"><code class="function">gst_mini_object_make_writable()</code></a> will return a writable version of
the object, which might be a new copy when the refcount was not 1.</p>
<p>Opaque data can be associated with a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> with
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-set-qdata" title="gst_mini_object_set_qdata ()"><code class="function">gst_mini_object_set_qdata()</code></a> and <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-get-qdata" title="gst_mini_object_get_qdata ()"><code class="function">gst_mini_object_get_qdata()</code></a>. The data is
meant to be specific to the particular object and is not automatically copied
with <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-copy" title="gst_mini_object_copy ()"><code class="function">gst_mini_object_copy()</code></a> or similar methods.</p>
<p>A weak reference can be added and remove with <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-weak-ref" title="gst_mini_object_weak_ref ()"><code class="function">gst_mini_object_weak_ref()</code></a>
and <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-weak-unref" title="gst_mini_object_weak_unref ()"><code class="function">gst_mini_object_weak_unref()</code></a> respectively.</p>
</div>
<div class="refsect1">
<a name="gstreamer-GstMiniObject.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GstMiniObjectCopyFunction"></a><h3>GstMiniObjectCopyFunction ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
<span class="c_punctuation">(</span>*GstMiniObjectCopyFunction<span class="c_punctuation">)</span> (<em class="parameter"><code>const <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *obj</code></em>);</pre>
<p>Function prototype for methods to create copies of instances.</p>
<div class="refsect3">
<a name="GstMiniObjectCopyFunction.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to copy</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GstMiniObjectCopyFunction.returns"></a><h4>Returns</h4>
<p> reference to cloned instance.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstMiniObjectDisposeFunction"></a><h3>GstMiniObjectDisposeFunction ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstMiniObjectDisposeFunction<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *obj</code></em>);</pre>
<p>Function prototype for when a miniobject has lost its last refcount.
Implementation of the mini object are allowed to revive the
passed object by doing a <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-ref" title="gst_mini_object_ref ()"><code class="function">gst_mini_object_ref()</code></a>. If the object is not
revived after the dispose function, the function should return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>
and the memory associated with the object is freed.</p>
<div class="refsect3">
<a name="GstMiniObjectDisposeFunction.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to dispose</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GstMiniObjectDisposeFunction.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the object should be cleaned up.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstMiniObjectFreeFunction"></a><h3>GstMiniObjectFreeFunction ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GstMiniObjectFreeFunction<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *obj</code></em>);</pre>
<p>Virtual function prototype for methods to free resources used by
mini-objects.</p>
<div class="refsect3">
<a name="GstMiniObjectFreeFunction.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to free</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstMiniObjectNotify"></a><h3>GstMiniObjectNotify ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GstMiniObjectNotify<span class="c_punctuation">)</span> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
                        <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *obj</code></em>);</pre>
<p>A <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectNotify" title="GstMiniObjectNotify ()"><span class="type">GstMiniObjectNotify</span></a> function can be added to a mini object as a
callback that gets triggered when <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unref" title="gst_mini_object_unref ()"><code class="function">gst_mini_object_unref()</code></a> drops the
last ref and <em class="parameter"><code>obj</code></em>
 is about to be freed.</p>
<div class="refsect3">
<a name="GstMiniObjectNotify.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>data that was provided when the notify was added</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>the mini object</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-TYPE:CAPS"></a><h3>GST_MINI_OBJECT_TYPE()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_TYPE(obj)  (GST_MINI_OBJECT_CAST(obj)-&gt;type)
</pre>
<p>This macro returns the type of the mini-object.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-TYPE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to return type for.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-FLAGS:CAPS"></a><h3>GST_MINI_OBJECT_FLAGS()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_FLAGS(obj)  (GST_MINI_OBJECT_CAST(obj)-&gt;flags)
</pre>
<p>This macro returns the entire set of flags for the mini-object.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-FLAGS.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to return flags for.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-FLAG-IS-SET:CAPS"></a><h3>GST_MINI_OBJECT_FLAG_IS_SET()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_FLAG_IS_SET(obj,flag)        !!(GST_MINI_OBJECT_FLAGS (obj) &amp; (flag))
</pre>
<p>This macro checks to see if the given flag is set.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-FLAG-IS-SET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to check for flags.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>Flag to check for</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-FLAG-SET:CAPS"></a><h3>GST_MINI_OBJECT_FLAG_SET()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_FLAG_SET(obj,flag)           (GST_MINI_OBJECT_FLAGS (obj) |= (flag))
</pre>
<p>This macro sets the given bits.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-FLAG-SET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to set flag in.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>Flag to set, can by any number of bits in guint32.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-FLAG-UNSET:CAPS"></a><h3>GST_MINI_OBJECT_FLAG_UNSET()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_FLAG_UNSET(obj,flag)         (GST_MINI_OBJECT_FLAGS (obj) &amp;= ~(flag))
</pre>
<p>This macro unsets the given bits.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-FLAG-UNSET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>MiniObject to unset flag in.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>Flag to set, must be a single bit in guint32.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-IS-LOCKABLE:CAPS"></a><h3>GST_MINI_OBJECT_IS_LOCKABLE()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_IS_LOCKABLE(obj)  GST_MINI_OBJECT_FLAG_IS_SET(obj, GST_MINI_OBJECT_FLAG_LOCKABLE)
</pre>
<p>Check if <em class="parameter"><code>obj</code></em>
 is lockable. A lockable object can be locked and unlocked with
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-lock" title="gst_mini_object_lock ()"><code class="function">gst_mini_object_lock()</code></a> and <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unlock" title="gst_mini_object_unlock ()"><code class="function">gst_mini_object_unlock()</code></a>.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-IS-LOCKABLE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-REFCOUNT:CAPS"></a><h3>GST_MINI_OBJECT_REFCOUNT()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_REFCOUNT(obj)           ((GST_MINI_OBJECT_CAST(obj))-&gt;refcount)
</pre>
<p>Get access to the reference count field of the mini-object.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-REFCOUNT.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-MINI-OBJECT-REFCOUNT-VALUE:CAPS"></a><h3>GST_MINI_OBJECT_REFCOUNT_VALUE()</h3>
<pre class="programlisting">#define GST_MINI_OBJECT_REFCOUNT_VALUE(obj)     (g_atomic_int_get (&amp;(GST_MINI_OBJECT_CAST(obj))-&gt;refcount))
</pre>
<p>Get the reference count value of the mini-object.</p>
<div class="refsect3">
<a name="GST-MINI-OBJECT-REFCOUNT-VALUE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>obj</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-DEFINE-MINI-OBJECT-TYPE:CAPS"></a><h3>GST_DEFINE_MINI_OBJECT_TYPE()</h3>
<pre class="programlisting">#define             GST_DEFINE_MINI_OBJECT_TYPE(TypeName,type_name)</pre>
<p>Define a new mini-object type with the given name</p>
<div class="refsect3">
<a name="GST-DEFINE-MINI-OBJECT-TYPE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>TypeName</p></td>
<td class="parameter_description"><p>name of the new type in CamelCase</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>type_name</p></td>
<td class="parameter_description"><p>name of the new type</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-init"></a><h3>gst_mini_object_init ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_init (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>,
                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> flags</code></em>,
                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>,
                      <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectCopyFunction" title="GstMiniObjectCopyFunction ()"><span class="type">GstMiniObjectCopyFunction</span></a> copy_func</code></em>,
                      <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectDisposeFunction" title="GstMiniObjectDisposeFunction ()"><span class="type">GstMiniObjectDisposeFunction</span></a> dispose_func</code></em>,
                      <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectFreeFunction" title="GstMiniObjectFreeFunction ()"><span class="type">GstMiniObjectFreeFunction</span></a> free_func</code></em>);</pre>
<p>Initializes a mini-object with the desired type and copy/dispose/free
functions.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-init.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>initial <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectFlags" title="enum GstMiniObjectFlags"><span class="type">GstMiniObjectFlags</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>type</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of the mini-object to create</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>copy_func</p></td>
<td class="parameter_description"><p>the copy function, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>dispose_func</p></td>
<td class="parameter_description"><p>the dispose function, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>free_func</p></td>
<td class="parameter_description"><p>the free function or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-ref"></a><h3>gst_mini_object_ref ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
gst_mini_object_ref (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>);</pre>
<p>Increase the reference count of the mini-object.</p>
<p>Note that the refcount affects the writability
of <em class="parameter"><code>mini</code></em>
-object, see <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-is-writable" title="gst_mini_object_is_writable ()"><code class="function">gst_mini_object_is_writable()</code></a>. It is
important to note that keeping additional references to
GstMiniObject instances can potentially increase the number
of memcpy operations in a pipeline, especially if the miniobject
is a <a class="link" href="GstBuffer.html" title="GstBuffer"><span class="type">GstBuffer</span></a>.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-ref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>the mini-object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-ref.returns"></a><h4>Returns</h4>
<p>the mini-object. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-unref"></a><h3>gst_mini_object_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_unref (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>);</pre>
<p>Decreases the reference count of the mini-object, possibly freeing
the mini-object.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-unref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>the mini-object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-clear-mini-object"></a><h3>gst_clear_mini_object ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_clear_mini_object (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> **object_ptr</code></em>);</pre>
<p>Clears a reference to a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a>.</p>
<p><em class="parameter"><code>object_ptr</code></em>
 must not be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>If the reference is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> then this function does nothing.
Otherwise, the reference count of the object is decreased using
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unref" title="gst_mini_object_unref ()"><code class="function">gst_mini_object_unref()</code></a> and the pointer is set to <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>A macro is also included that allows this function to be used without
pointer casts.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-clear-mini-object.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>object_ptr</p></td>
<td class="parameter_description"><p>a pointer to a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> reference</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-weak-ref"></a><h3>gst_mini_object_weak_ref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_weak_ref (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                          <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectNotify" title="GstMiniObjectNotify ()"><span class="type">GstMiniObjectNotify</span></a> notify</code></em>,
                          <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre>
<p>Adds a weak reference callback to a mini object. Weak references are
used for notification when a mini object is finalized. They are called
"weak references" because they allow you to safely hold a pointer
to the mini object without calling <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-ref" title="gst_mini_object_ref ()"><code class="function">gst_mini_object_ref()</code></a>
(<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-ref" title="gst_mini_object_ref ()"><code class="function">gst_mini_object_ref()</code></a> adds a strong reference, that is, forces the object
to stay alive).</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-weak-ref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> to reference weakly</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>notify</p></td>
<td class="parameter_description"><p>callback to invoke before the mini object is freed</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>extra data to pass to notify</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-weak-unref"></a><h3>gst_mini_object_weak_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_weak_unref (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                            <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectNotify" title="GstMiniObjectNotify ()"><span class="type">GstMiniObjectNotify</span></a> notify</code></em>,
                            <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre>
<p>Removes a weak reference callback from a mini object.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-weak-unref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> to remove a weak reference from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>notify</p></td>
<td class="parameter_description"><p>callback to search for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>data to search for</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-lock"></a><h3>gst_mini_object_lock ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_mini_object_lock (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                      <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstLockFlags" title="enum GstLockFlags"><span class="type">GstLockFlags</span></a> flags</code></em>);</pre>
<p>Lock the mini-object with the specified access mode in <em class="parameter"><code>flags</code></em>
.</p>
<div class="refsect3">
<a name="gst-mini-object-lock.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>the mini-object to lock</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p><a class="link" href="gstreamer-GstMiniObject.html#GstLockFlags" title="enum GstLockFlags"><span class="type">GstLockFlags</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-lock.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>object</code></em>
could be locked.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-unlock"></a><h3>gst_mini_object_unlock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_unlock (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                        <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstLockFlags" title="enum GstLockFlags"><span class="type">GstLockFlags</span></a> flags</code></em>);</pre>
<p>Unlock the mini-object with the specified access mode in <em class="parameter"><code>flags</code></em>
.</p>
<div class="refsect3">
<a name="gst-mini-object-unlock.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>the mini-object to unlock</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p><a class="link" href="gstreamer-GstMiniObject.html#GstLockFlags" title="enum GstLockFlags"><span class="type">GstLockFlags</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-is-writable"></a><h3>gst_mini_object_is_writable ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_mini_object_is_writable (<em class="parameter"><code>const <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>);</pre>
<p>If <em class="parameter"><code>mini_object</code></em>
 has the LOCKABLE flag set, check if the current EXCLUSIVE
lock on <em class="parameter"><code>object</code></em>
 is the only one, this means that changes to the object will
not be visible to any other object.</p>
<p>If the LOCKABLE flag is not set, check if the refcount of <em class="parameter"><code>mini_object</code></em>
 is
exactly 1, meaning that no other reference exists to the object and that the
object is therefore writable.</p>
<p>Modification of a mini-object should only be done after verifying that it
is writable.</p>
<div class="refsect3">
<a name="gst-mini-object-is-writable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>the mini-object to check</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-is-writable.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the object is writable.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-make-writable"></a><h3>gst_mini_object_make_writable ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
gst_mini_object_make_writable (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>);</pre>
<p>Checks if a mini-object is writable.  If not, a writable copy is made and
returned.  This gives away the reference to the original mini object,
and returns a reference to the new object.</p>
<p>MT safe</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-make-writable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>the mini-object to make writable. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-make-writable.returns"></a><h4>Returns</h4>
<p>a mini-object (possibly the same pointer) that
is writable. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-add-parent"></a><h3>gst_mini_object_add_parent ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_add_parent (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                            <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *parent</code></em>);</pre>
<p>This adds <em class="parameter"><code>parent</code></em>
 as a parent for <em class="parameter"><code>object</code></em>
. Having one ore more parents affects the
writability of <em class="parameter"><code>object</code></em>
: if a <em class="parameter"><code>parent</code></em>
 is not writable, <em class="parameter"><code>object</code></em>
 is also not
writable, regardless of its refcount. <em class="parameter"><code>object</code></em>
 is only writable if all
the parents are writable and its own refcount is exactly 1.</p>
<p>Note: This function does not take ownership of <em class="parameter"><code>parent</code></em>
 and also does not
take an additional reference. It is the responsibility of the caller to
remove the parent again at a later time.</p>
<div class="refsect3">
<a name="gst-mini-object-add-parent.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>parent</p></td>
<td class="parameter_description"><p>a parent <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-remove-parent"></a><h3>gst_mini_object_remove_parent ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_remove_parent (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                               <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *parent</code></em>);</pre>
<p>This removes <em class="parameter"><code>parent</code></em>
 as a parent for <em class="parameter"><code>object</code></em>
. See
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-add-parent" title="gst_mini_object_add_parent ()"><code class="function">gst_mini_object_add_parent()</code></a>.</p>
<div class="refsect3">
<a name="gst-mini-object-remove-parent.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>parent</p></td>
<td class="parameter_description"><p>a parent <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-copy"></a><h3>gst_mini_object_copy ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
gst_mini_object_copy (<em class="parameter"><code>const <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *mini_object</code></em>);</pre>
<p>Creates a copy of the mini-object.</p>
<p>MT safe</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-copy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mini_object</p></td>
<td class="parameter_description"><p>the mini-object to copy</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-copy.returns"></a><h4>Returns</h4>
<p>the new mini-object if copying is
possible, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> otherwise. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-set-qdata"></a><h3>gst_mini_object_set_qdata ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_mini_object_set_qdata (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> quark</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> destroy</code></em>);</pre>
<p>This sets an opaque, named pointer on a miniobject.
The name is specified through a <a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> (retrieved e.g. via
<a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#g-quark-from-static-string"><code class="function">g_quark_from_static_string()</code></a>), and the pointer
can be gotten back from the <em class="parameter"><code>object</code></em>
 with <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-get-qdata" title="gst_mini_object_get_qdata ()"><code class="function">gst_mini_object_get_qdata()</code></a>
until the <em class="parameter"><code>object</code></em>
 is disposed.
Setting a previously set user data pointer, overrides (frees)
the old pointer set, using <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> as pointer essentially
removes the data stored.</p>
<p><em class="parameter"><code>destroy</code></em>
 may be specified which is called with <em class="parameter"><code>data</code></em>
 as argument
when the <em class="parameter"><code>object</code></em>
 is disposed, or the data is being overwritten by
a call to <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-set-qdata" title="gst_mini_object_set_qdata ()"><code class="function">gst_mini_object_set_qdata()</code></a> with the same <em class="parameter"><code>quark</code></em>
.</p>
<div class="refsect3">
<a name="gst-mini-object-set-qdata.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>quark</p></td>
<td class="parameter_description"><p>A <a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a>, naming the user data pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>An opaque user data pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>destroy</p></td>
<td class="parameter_description"><p>Function to invoke with <em class="parameter"><code>data</code></em>
as argument, when <em class="parameter"><code>data</code></em>
needs to be freed</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-get-qdata"></a><h3>gst_mini_object_get_qdata ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
gst_mini_object_get_qdata (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> quark</code></em>);</pre>
<p>This function gets back user data pointers stored via
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-set-qdata" title="gst_mini_object_set_qdata ()"><code class="function">gst_mini_object_set_qdata()</code></a>.</p>
<div class="refsect3">
<a name="gst-mini-object-get-qdata.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>The GstMiniObject to get a stored user data pointer from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>quark</p></td>
<td class="parameter_description"><p>A <a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a>, naming the user data pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-get-qdata.returns"></a><h4>Returns</h4>
<p>The user data pointer set, or
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-steal-qdata"></a><h3>gst_mini_object_steal_qdata ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
gst_mini_object_steal_qdata (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *object</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> quark</code></em>);</pre>
<p>This function gets back user data pointers stored via <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-set-qdata" title="gst_mini_object_set_qdata ()"><code class="function">gst_mini_object_set_qdata()</code></a>
and removes the data from <em class="parameter"><code>object</code></em>
 without invoking its <code class="function">destroy()</code> function (if
any was set).</p>
<div class="refsect3">
<a name="gst-mini-object-steal-qdata.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>The GstMiniObject to get a stored user data pointer from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>quark</p></td>
<td class="parameter_description"><p>A <a href="/usr/share/gtk-doc/html/glib/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a>, naming the user data pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-steal-qdata.returns"></a><h4>Returns</h4>
<p>The user data pointer set, or
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-replace"></a><h3>gst_mini_object_replace ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_mini_object_replace (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> **olddata</code></em>,
                         <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *newdata</code></em>);</pre>
<p>Atomically modifies a pointer to point to a new mini-object.
The reference count of <em class="parameter"><code>olddata</code></em>
 is decreased and the reference count of
<em class="parameter"><code>newdata</code></em>
 is increased.</p>
<p>Either <em class="parameter"><code>newdata</code></em>
 and the value pointed to by <em class="parameter"><code>olddata</code></em>
 may be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<div class="refsect3">
<a name="gst-mini-object-replace.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>olddata</p></td>
<td class="parameter_description"><p>pointer to a pointer to a
mini-object to be replaced. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>newdata</p></td>
<td class="parameter_description"><p>pointer to new mini-object. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-replace.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>newdata</code></em>
was different from <em class="parameter"><code>olddata</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-take"></a><h3>gst_mini_object_take ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_mini_object_take (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> **olddata</code></em>,
                      <em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> *newdata</code></em>);</pre>
<p>Modifies a pointer to point to a new mini-object. The modification
is done atomically. This version is similar to <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-replace" title="gst_mini_object_replace ()"><code class="function">gst_mini_object_replace()</code></a>
except that it does not increase the refcount of <em class="parameter"><code>newdata</code></em>
 and thus
takes ownership of <em class="parameter"><code>newdata</code></em>
.</p>
<p>Either <em class="parameter"><code>newdata</code></em>
 and the value pointed to by <em class="parameter"><code>olddata</code></em>
 may be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<div class="refsect3">
<a name="gst-mini-object-take.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>olddata</p></td>
<td class="parameter_description"><p>pointer to a pointer to a mini-object to
be replaced. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>newdata</p></td>
<td class="parameter_description"><p>pointer to new mini-object</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-take.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>newdata</code></em>
was different from <em class="parameter"><code>olddata</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-mini-object-steal"></a><h3>gst_mini_object_steal ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="returnvalue">GstMiniObject</span></a> *
gst_mini_object_steal (<em class="parameter"><code><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> **olddata</code></em>);</pre>
<p>Replace the current <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> pointer to by <em class="parameter"><code>olddata</code></em>
 with <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> and
return the old value.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-mini-object-steal.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>olddata</p></td>
<td class="parameter_description"><p>pointer to a pointer to a mini-object to
be stolen. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-mini-object-steal.returns"></a><h4>Returns</h4>
<p>the <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> at <em class="parameter"><code>oldata</code></em>
. </p>
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-GstMiniObject.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstMiniObject"></a><h3>struct GstMiniObject</h3>
<pre class="programlisting">struct GstMiniObject {
  GType   type;

  gint    refcount;
  gint    lockstate;
  guint   flags;

  GstMiniObjectCopyFunction copy;
  GstMiniObjectDisposeFunction dispose;
  GstMiniObjectFreeFunction free;
};
</pre>
<p>Base class for refcounted lightweight objects.</p>
<div class="refsect3">
<a name="GstMiniObject.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> <em class="structfield"><code><a name="GstMiniObject.type"></a>type</code></em>;</p></td>
<td class="struct_member_description"><p>the GType of the object</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstMiniObject.refcount"></a>refcount</code></em>;</p></td>
<td class="struct_member_description"><p>atomic refcount</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstMiniObject.lockstate"></a>lockstate</code></em>;</p></td>
<td class="struct_member_description"><p>atomic state of the locks</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstMiniObject.flags"></a>flags</code></em>;</p></td>
<td class="struct_member_description"><p>extra flags.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectCopyFunction" title="GstMiniObjectCopyFunction ()"><span class="type">GstMiniObjectCopyFunction</span></a> <em class="structfield"><code><a name="GstMiniObject.copy"></a>copy</code></em>;</p></td>
<td class="struct_member_description"><p>a copy function</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectDisposeFunction" title="GstMiniObjectDisposeFunction ()"><span class="type">GstMiniObjectDisposeFunction</span></a> <em class="structfield"><code><a name="GstMiniObject.dispose"></a>dispose</code></em>;</p></td>
<td class="struct_member_description"><p>a dispose function</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObjectFreeFunction" title="GstMiniObjectFreeFunction ()"><span class="type">GstMiniObjectFreeFunction</span></a> <em class="structfield"><code><a name="GstMiniObject.free"></a>free</code></em>;</p></td>
<td class="struct_member_description"><p>the free function</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstMiniObjectFlags"></a><h3>enum GstMiniObjectFlags</h3>
<p>Flags for the mini object</p>
<div class="refsect3">
<a name="GstMiniObjectFlags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-MINI-OBJECT-FLAG-LOCKABLE:CAPS"></a>GST_MINI_OBJECT_FLAG_LOCKABLE</p></td>
<td class="enum_member_description">
<p>the object can be locked and unlocked with
<a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-lock" title="gst_mini_object_lock ()"><code class="function">gst_mini_object_lock()</code></a> and <a class="link" href="gstreamer-GstMiniObject.html#gst-mini-object-unlock" title="gst_mini_object_unlock ()"><code class="function">gst_mini_object_unlock()</code></a>.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MINI-OBJECT-FLAG-LOCK-READONLY:CAPS"></a>GST_MINI_OBJECT_FLAG_LOCK_READONLY</p></td>
<td class="enum_member_description">
<p>the object is permanently locked in
READONLY mode. Only read locks can be performed on the object.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MINI-OBJECT-FLAG-MAY-BE-LEAKED:CAPS"></a>GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED</p></td>
<td class="enum_member_description">
<p>the object is expected to stay alive
even after <a class="link" href="gstreamer-Gst.html#gst-deinit" title="gst_deinit ()"><code class="function">gst_deinit()</code></a> has been called and so should be ignored by leak
detection tools. (Since: 1.10)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MINI-OBJECT-FLAG-LAST:CAPS"></a>GST_MINI_OBJECT_FLAG_LAST</p></td>
<td class="enum_member_description">
<p>first flag that can be used by subclasses.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstLockFlags"></a><h3>enum GstLockFlags</h3>
<p>Flags used when locking miniobjects</p>
<div class="refsect3">
<a name="GstLockFlags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-LOCK-FLAG-READ:CAPS"></a>GST_LOCK_FLAG_READ</p></td>
<td class="enum_member_description">
<p>lock for read access</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-LOCK-FLAG-WRITE:CAPS"></a>GST_LOCK_FLAG_WRITE</p></td>
<td class="enum_member_description">
<p>lock for write access</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-LOCK-FLAG-EXCLUSIVE:CAPS"></a>GST_LOCK_FLAG_EXCLUSIVE</p></td>
<td class="enum_member_description">
<p>lock for exclusive access</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-LOCK-FLAG-LAST:CAPS"></a>GST_LOCK_FLAG_LAST</p></td>
<td class="enum_member_description">
<p>first flag that can be used for custom purposes</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-LOCK-FLAG-READWRITE:CAPS"></a><h3>GST_LOCK_FLAG_READWRITE</h3>
<pre class="programlisting">#define GST_LOCK_FLAG_READWRITE  ((GstLockFlags) (GST_LOCK_FLAG_READ | GST_LOCK_FLAG_WRITE))
</pre>
<p>GstLockFlags value alias for GST_LOCK_FLAG_READ | GST_LOCK_FLAG_WRITE</p>
</div>
</div>
</div>
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